Hoisting machine



(N0 Model.)

R. REH).

HOISTING MAGHINE. N0. 278,821. PatentedJune 1883.

UNITED STATES PATENT FFIGE.

ROBERT REID, OF PHILADELPHIA, PENNSYLVANIA.

HO!STING-MACHINE.

SPECIFICA'IION forming pa.rt of Letters Patent N0. 278,821, dated June 5, 1883.

. Applicatir'm filed February 5, 188.3. (N model.)

T0 all w7wm ib may concrn:

Be 1't known that I, ROBERT REID, of the city 0f Philaclelphia, eonnty 0f Philadelp'hia, an(l Stat6 0f Pennsylvania, l1ave invented an Improvement in Hoisting-llaehines, 0f which the following is a specification.

My invention l1as referenee t0 hoisting-machines in general, but more particularly t0 that dass of such clevices whieh a1e teehnically known as portable hoisting-maehines ancl it consists in gearing, combined with lifting and band chain wheels and bearings 0f peeuliar eonstrnction, whereby tl1e machine is prevented f10111 1unning down, an(l in many details 0f constrnction, all 0f which a1e fully set f01t11 in alle following specification, and sh0wn in the aceompanying drawings, wln'ch f01n1 part thereof.

Heretofore it 11as been enstomary to rotate the lifting-chain Wl1 eel by means 0f a W01111 and worm-wheel. The bearing-snrfaee between tl1e two being s1nall, the wear is great, tl1e speecl is slow, ancl the wenn should run' in 0il. By 1ny constrnction the cost is greatly lessened, as tl1e worm-wheel is clispensed with, the gearing inay 1u11 comparatively clry, Will not 1un (W11, and'the frietion neeessary t0 prment said 1unning Clown is automatically inereased 01 tlecreased witl1 the vary1'ng weights 0f tl1e different loacls snpported. Greatersimplieity is atcained, and the clevice as a whole is 110t es liable t0 get out of Order 01 wem 0111- so soon as those in whieh tl1e wenn is used.

In tl1e drawings, Figure l is a side elewxtion of my improved hoisting-maehine. Fig. 2 is an end elevation 0'f szune, With art in seetion. Fig. 3 is a side elevation 0f tl1e lifting-chain gnide t0 keep the ehain in the groovein the chain-wheel and F1'g. 4 1's a plan view of the hand-elmin gnicle, Wl1i0h is adaptecl t0 keep the D(ESS hancl-ehain in the groove 0f the chain-wheel 0ver whieh it ums.

A A are frame-plates secured together at the botto1n by stay E, in the middle by sl1aft B, upon whicl1 the lifting-ehain wheel O is j 0111- naled, and a1e provicled at the cop with bearing eyes 01 holes A.

The chain-wheel O may be made in any desired manner, bnt I prefer it t0 havethe cl1aingroove bet-ween two spur-wheels, D D, cast integral therewith 01 otherwisie secured the1eto.

H is the supportinghook, and is pivoted t0 These plates F and A zne hinged toge'ther by the journals I, having flanges i 011 their inner sides, as shown.

Seenrecl to diese j0u111als the pinion K, which latter is located betwveen 1;he journa-ls 1 and meshes with the spur-wheels D. The outer encl 0f fl1e slmft J is seeuretl t0 the hancl-chain wheel L, 0ve1 whieh the ehain R travels, and is preVented f101n getting 0ff said wheel by gnide N, whiel1 fits ehe flange 0f seid elmin-wheel L, and is supportecl and 02m- 1ied by an extension, f, [0 0ne 0f the plates F,

lt 1's evident that the journals I und sl1aft J 1nay be made solid, 01 these 1nay be made integral With the pinion K. 'Ilxe lifting el1ain P passes over tl1e ehain-wheel C, and is p1e vented frombecoming displaeed bythe enrved guide M, having groove lWI t0 receive tl1e line 0f n1etal fonnecl by tl1e extending links, and an eye 01 bearing, m, \\*hieh.eneircles the pin i0n K 01 its sl1aft ancl is prevented f10n1 lat eral displaeement by the spur-wheels D.

The Operation is as follows: The l0ad being attaehecl t0 -the chain P, tl1e frzune A and ehainwheel C will naturally swing t0 0ne side, as in(licatecl in Fig. l, except ahnt in praetice t-l1e chain P wonld never pass a vertieal line through the snpporting-hook H 01 shaft J. Tlie plates A being hingecl t0 plates F, tl1e frietion (lue to the snpp01t 0'f tl1e load comes is alle shaft J of upon the la1ge jonrnals I, and which is snffieient [0 prevent the 1unning clow n 0f the ma chine with the heaviest l0acl 1't is adapted to supp 01t. As the l0a d "2Ul es in weight the frzune- 021,11yi11g chain-wheel (l vmies f101n a vertical p0sition t0 an angula1 one, irs pivotal p0int being at J, and the an1ount 0f frietion also va- 1ies. In the sznne ratio the power necessary t0 be exerted t0 reise 01 l0wer tl1e loadis proportional t0 the sa1ne. Somewlmt tl1e same effeet woulcl be attained if tl1e frame-plates A and F we1*e made integral; bnt I p1efe1 l1inging them,as shown. By this construction of hoist great speed in mising 01 lowering loads is attainecl, as it is possible t0 vary the ratio between the spur-wheels D and pinion K within large limits; 01 if clesirecl, intennedite gemring may be nsecl t0 inerease tl1e speed.

I do 110t limit myself t0 the construetion ing-chain wheel furnished with 0ne 017 111017espur-wheels, in combination with a pinion t0 rotate said chuinwheel, a shaft t0 rotate said pinion having journals 0f ]arger diameter 0112m the said pinion, substantially as und f0r the purpose speeified.

2. A hoisting-nmchine proflded with a 1ifting-ehain whee1 furn1'shed with 011e 01 m0re spqr-wheels, in eombination with a pivoted frame t0 snpport said chaimwhee], a pinion to said pinion, a shaflz t0 1Otate said pinio11 112W- ing journals of langer diameter than the said pini0n, and adapted t0 piw t said frames to gether, substantially as and f01 the purpose speeified.

3. A hoisting-machine p10xided with a 1ifting-ehain wheel furnished with 0ne 01 m01e spur-wheels, in eon1bination with a pivoted frame t0 support said chain-wheel,a pinion t0 rotate sai d chain-whee], a frame t0 Support szu'd pinion, a shaft [0 1 r0tate said pinion having journals 0f larger diaineter than the said pini0n aud adapted t0 piv0t said frames toget-her, 111d a handehain wheel and chain (0 rotate said shaft, substantially as and f01 the purpose specified.

4. A hoisting-maehine prow'ded with a 1ifting@h&in wheel furnished with one'0r m0re spur-wheels, in c0mbination with a pivoted frame t0 Support said chuinwheel, a pinion t0 rotate said ehaimwheel, a fmm'e t0 supportsaid pinion, a shaft t0 rotate said pini0n, havi ng journals 0f large1r diaaneter th2u1 the said pinion and adapted t0 piv0t said fmmes together, {und a hand-chain wheel {111d ehain t0 rotafe said shaft, and u guide t0 prexentthe band-011111111 f1'0111 becoming displaced f10111 said hand chain whee], substantially as and f01 the purpose specified.

5. A hoisting-nmehine provided With a 1ifting-chain wheel furnished wi'th 011e 01 11101e spur-wheels, in combination with a pivoted frame t0 supp01t said chain-wheel, zu pinion t0 rotate said ehain-wheel, a f1rame t0 support s-aid 1)i11i011, a shaft f0 rot-ate said pinion; hav

ing journals of larger diameter than the said pinion und adapted t0 piv0t said frzmmes 130- gether, a liftingchain, and a guide whieh follows the axis 0f the lifting-ehain' whee1 t0 prevent the displaeement 0f the c1min theref10111, substantially as und f01 the pu1pose speeified.

6. A hoisting-maehine provided witl1 a 1iftingchain whee1 furnished with 011e 01 more spur-wheels,- in eombination with a pivoted frzune t0 support said chain-wheel, a pinion t0 rotate said chain-wheel, a frame t0 support said pini'on, a shafu to' r0tate said pini0n, having journals of 1arger diameter than the seid pinion and adapted t0 pivo said fran1es together, 2u1d a band-01121111 whee1 2md chain t0 rotate said shaft, and a guide t0 prevent the 'hand-ehain f10111 beeoming displaeed f10n1 said hand-chain wheel, a lil'ting-ehain, and a guide whieh follows the axis of the lifting-ehain whee1 to p1event ehe displacement 0f the chain therefrom, substantially as and fo1r the purpose specified,

T. The eombination of frame-plates A zmd F, shaft B, lifting-ehain wheel O, having spurwheels D, pinion K, shaft J, having journals I 0f large diameter, chain-wheel L, ehain R, and ehain I, substantially as and fo1 the purpose specified.

S. Tl 1e eombination of frzune-plates A und F, shaft B, lifting-ehain whee1 O, having spur whee1s D, pinion K, shaft J, having journals I 0f large diameter, chain-wheel L, guide N, seeured to firame-plates F, ehain R, and chain P, substantially as and f01' the purpose specified.

9. The combination 0f frmneplates A and F, shaft B, lifting-chain wheel C, hzwing spur-. whee1s D, guide M, pinion K, shaft J, having journals I 0f large diameter, ehain-wheel L, chain R, 2u1d ehain P, substantially as and 'f01' the purpose specified.

10. In a hoisting-maehine, a lifting-ehain whee1 01' dru1n and its ehain, in combination With means tomotate said ehain-wheel, a frietion-bearing independent of said chain-whee], and gearing t0 rotate seid bearing by the 10 tation 0f ehe chain-whee], the w1101e being so construeted as to bring the weight 0f the 10ad supported by the lifting-ehain up011 said frietion-bearing t0 prevent running down 0f the nmehine, substantially as and 'f01 the purpose specified.

111 testimony 0f which invention I hereunto set 1ny band.

ROBERT REID.

\Vitnessesz R. M. HUNTER, B. S, CH-ILD, J1.

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